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WO2012109093A3 - Memory devices with series-interconnected magnetic random access memory cells - Google Patents

Memory devices with series-interconnected magnetic random access memory cells Download PDF

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Publication number
WO2012109093A3
WO2012109093A3 PCT/US2012/023681 US2012023681W WO2012109093A3 WO 2012109093 A3 WO2012109093 A3 WO 2012109093A3 US 2012023681 W US2012023681 W US 2012023681W WO 2012109093 A3 WO2012109093 A3 WO 2012109093A3
Authority
WO
WIPO (PCT)
Prior art keywords
series
random access
magnetic random
cells
mram cells
Prior art date
Application number
PCT/US2012/023681
Other languages
French (fr)
Other versions
WO2012109093A2 (en
Inventor
Neal Berger
Mourad El Baraji
Original Assignee
Crocus Technology Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Crocus Technology Inc. filed Critical Crocus Technology Inc.
Priority to EP12744553.4A priority Critical patent/EP2673780A4/en
Publication of WO2012109093A2 publication Critical patent/WO2012109093A2/en
Publication of WO2012109093A3 publication Critical patent/WO2012109093A3/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1675—Writing or programming circuits or methods
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1659—Cell access
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1673—Reading or sensing circuits or methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mram Or Spin Memory Techniques (AREA)
  • Hall/Mr Elements (AREA)
  • Semiconductor Memories (AREA)

Abstract

A memory device includes magnetic random access memory ("MRAM") cells that are electrically connected in series, each one of the MRAM cells having a storage magnetization direction and a sense magnetization direction. During a write operation, multiple ones of the MRAM cells are written in parallel by switching the storage magnetization directions of the MRAM cells. During a read operation, a particular one of the MRAM cells is read by varying the sense magnetization direction of the particular one of the MRAM cells, relative to the storage magnetization direction of the particular one of the MRAM cells.
PCT/US2012/023681 2011-02-08 2012-02-02 Memory devices with series-interconnected magnetic random access memory cells WO2012109093A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12744553.4A EP2673780A4 (en) 2011-02-08 2012-02-02 Memory devices with series-interconnected magnetic random access memory cells

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/023,441 2011-02-08
US13/023,441 US8625336B2 (en) 2011-02-08 2011-02-08 Memory devices with series-interconnected magnetic random access memory cells

Publications (2)

Publication Number Publication Date
WO2012109093A2 WO2012109093A2 (en) 2012-08-16
WO2012109093A3 true WO2012109093A3 (en) 2012-10-18

Family

ID=46600546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/023681 WO2012109093A2 (en) 2011-02-08 2012-02-02 Memory devices with series-interconnected magnetic random access memory cells

Country Status (4)

Country Link
US (1) US8625336B2 (en)
EP (1) EP2673780A4 (en)
TW (1) TWI529709B (en)
WO (1) WO2012109093A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6982892B2 (en) 2003-05-08 2006-01-03 Micron Technology, Inc. Apparatus and methods for a physical layout of simultaneously sub-accessible memory modules
US8467234B2 (en) * 2011-02-08 2013-06-18 Crocus Technology Inc. Magnetic random access memory devices configured for self-referenced read operation
US8488372B2 (en) 2011-06-10 2013-07-16 Crocus Technology Inc. Magnetic random access memory devices including multi-bit cells
US8576615B2 (en) 2011-06-10 2013-11-05 Crocus Technology Inc. Magnetic random access memory devices including multi-bit cells
US8611140B2 (en) 2011-09-21 2013-12-17 Crocus Technology Inc. Magnetic random access memory devices including shared heating straps
US8611141B2 (en) * 2011-09-21 2013-12-17 Crocus Technology Inc. Magnetic random access memory devices including heating straps
US9293182B2 (en) * 2011-12-15 2016-03-22 Everspin Technologies, Inc. Random access memory architecture for reading bit states
EP2712078B1 (en) 2012-09-25 2015-06-03 Crocus Technology S.A. Magnetic logic unit (MLU) cell and amplifier having a linear magnetic signal
US8816455B2 (en) * 2012-10-22 2014-08-26 Crocus Technology Inc. Memory devices with magnetic random access memory (MRAM) cells and associated structures for connecting the MRAM cells
US20140124880A1 (en) * 2012-11-06 2014-05-08 International Business Machines Corporation Magnetoresistive random access memory
US20150213867A1 (en) * 2014-01-28 2015-07-30 Qualcomm Incorporated Multi-level cell designs for high density low power gshe-stt mram
US9330748B2 (en) 2014-05-09 2016-05-03 Tower Semiconductor Ltd. High-speed compare operation using magnetic tunnel junction elements including two different anti-ferromagnetic layers
US9331123B2 (en) 2014-05-09 2016-05-03 Tower Semiconductor Ltd. Logic unit including magnetic tunnel junction elements having two different anti-ferromagnetic layers
JP6576440B2 (en) * 2014-10-03 2019-09-25 クロッカス・テクノロジー・ソシエテ・アノニム Electrical wiring device for magnetic devices based on MRAM
KR102463023B1 (en) * 2016-02-25 2022-11-03 삼성전자주식회사 Variable resistance memory devices and methods of manufacturing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030026876A (en) * 2001-09-25 2003-04-03 휴렛-팩커드 컴퍼니(델라웨어주법인) Magneto-resistive device including soft reference layer having embedded conductors
US20070097733A1 (en) * 2005-11-01 2007-05-03 Perner Frederick A Controllably connectable strings of MRAM cells
US20080247072A1 (en) * 2007-03-29 2008-10-09 Commissariat A L'energie Atomique Magnetic tunnel junction magnetic memory
US20090073755A1 (en) * 2006-03-15 2009-03-19 Honeywell International Inc. MRAM read bit with askew fixed layer
US20100103729A1 (en) * 2008-10-27 2010-04-29 Seagate Technology Llc Spin-transfer torque memory self-reference read and write assist methods

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6473336B2 (en) * 1999-12-16 2002-10-29 Kabushiki Kaisha Toshiba Magnetic memory device
DE602004004253T2 (en) * 2003-03-20 2007-11-15 Koninklijke Philips Electronics N.V. SIMULTANEOUS READING AND WRITING IN DIFFERENT MEMORY CELLS
US6667901B1 (en) * 2003-04-29 2003-12-23 Hewlett-Packard Development Company, L.P. Dual-junction magnetic memory device and read method
US6925000B2 (en) * 2003-12-12 2005-08-02 Maglabs, Inc. Method and apparatus for a high density magnetic random access memory (MRAM) with stackable architecture
US6980466B2 (en) * 2004-01-15 2005-12-27 Hewlett-Packard Development Company, L.P. Soft-reference four conductor magnetic memory storage device
US7154798B2 (en) * 2004-04-27 2006-12-26 Taiwan Semiconductor Manufacturing Company, Ltd. MRAM arrays and methods for writing and reading magnetic memory devices
US7486545B2 (en) 2005-11-01 2009-02-03 Magic Technologies, Inc. Thermally assisted integrated MRAM design and process for its manufacture
KR100735748B1 (en) * 2005-11-09 2007-07-06 삼성전자주식회사 Semiconductor devices including memory cells employing variable resistors as data storage elements, systems employing the same and methods of operating the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030026876A (en) * 2001-09-25 2003-04-03 휴렛-팩커드 컴퍼니(델라웨어주법인) Magneto-resistive device including soft reference layer having embedded conductors
US20070097733A1 (en) * 2005-11-01 2007-05-03 Perner Frederick A Controllably connectable strings of MRAM cells
US20090073755A1 (en) * 2006-03-15 2009-03-19 Honeywell International Inc. MRAM read bit with askew fixed layer
US20080247072A1 (en) * 2007-03-29 2008-10-09 Commissariat A L'energie Atomique Magnetic tunnel junction magnetic memory
US20100103729A1 (en) * 2008-10-27 2010-04-29 Seagate Technology Llc Spin-transfer torque memory self-reference read and write assist methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2673780A4 *

Also Published As

Publication number Publication date
TW201234363A (en) 2012-08-16
EP2673780A2 (en) 2013-12-18
EP2673780A4 (en) 2017-12-27
WO2012109093A2 (en) 2012-08-16
US20120201073A1 (en) 2012-08-09
TWI529709B (en) 2016-04-11
US8625336B2 (en) 2014-01-07

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